careful. they grg to ta they are going to take a lot of care and a lot of time to lower it into position. they have to hold it perfectly in place. so they are going is to have gps stabilizers on the barge that's lowering this down. there is going to be constant adjustments going on for current, wind, all sorts of conditions like that, to make sure that this containment vessel stays in the right spot all wait down for a couple of days possibly going to that one spot on the ocean floor. a very difficult feat of engineering. this isn't just a long-shot. this is the only shot. they don't have a backup device in case something goes wrong with this. they would have to go back toot drawing board and start over again. >> where exactly is the dome right now? >> well, the dome left port over 12 hours ago. we were told it was a 12-hour journey out to the location.